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Assessment of behavioural effect in freshwater amphipods exposed to remediated vinasse

Grant number: 18/06971-1
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): May 10, 2018
Effective date (End): September 09, 2018
Field of knowledge:Biological Sciences - Ecology
Principal Investigator:Carmem Silvia Fontanetti Christofoletti
Grantee:Ana Claudia de Castro Marcato
Supervisor abroad: Alex Ford
Home Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
Local de pesquisa : University of Portsmouth, England  
Associated to the scholarship:14/23919-2 - Use of constructed wetlands system (CWS) in the treatment of vinasse and evaluation of their toxicity per histological and molecular analyzes, BP.DR

Abstract

Water is an essential factor for the maintenance of vital functions of living beings. Have been seen an increasing impairment of quality of this resource, due to pollution from many sources and even entire watersheds, either by industrial waste, sewage, or, for substances used in agriculture, such as pesticides, herbicides and fertilizers. The vinasse, a byproduct of ethanol production from sugarcane (Saccharum sp.), is used, mainly in Brazil, as fertilizer. This substance has significant polluting power due to its high concentration of organic matter, which can reach water by percolation and/or leaching. The constructed wetlands systems (CWSs) are highly effective biogeochemical systems to treat wastewater from different sources. The CWSs have natural processes of aquatic macrophytes, which not only directly accumulate pollutants in their tissues, but also act as catalysts for purification reactions that commonly occur in the rhizosphere of plants, which is an alternative treatment for vinasse. Fish are excellent models for experimental studies of aquatic toxicology, because warn of the potential danger of chemicals or the possibility of environmental pollution. Several observed responses in these organisms are excellent biomarkers, for example, histopathology of liver and gill, investigation of the molecular mechanisms that indicate cellular stress. Given the above, this project aims to check the effectiveness of phytoremediation treatment of vinasse from sugar cane through the use of CWS and analyze the toxicity of vinasse treated using ultramorfológico, histological, histochemical analysis and molecular tests in tilapia, using gills and liver of these animals.